/*!	 synfig/rendering/common/optimizer/optimizerdraft.cpp
**	 Draft Optimizers
**
**	......... ... 2017 Ivan Mahonin
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#ifndef _WIN32
#include <unistd.h>
#include <sys/types.h>
#include <signal.h>
#endif

#include "optimizerdraft.h"

#include "../task/taskcontour.h"
#include "../task/taskblur.h"
#include "../task/tasklayer.h"
#include "../task/tasksurfaceresample.h"

#endif

using namespace synfig;
using namespace rendering;

void
OptimizerDraftLowRes::run(const RunParams& params) const
{
    if (params.ref_task && !params.parent) {
        Task::Handle sub_task = params.ref_task->clone();

        TaskSurfaceResample::Handle resample = new TaskSurfaceResample();
        assign(resample, sub_task);
        resample->init_target_rect(
            sub_task->get_target_rect(),
            sub_task->get_source_rect_lt(),
            sub_task->get_source_rect_rb());
        resample->supersample = Vector(1.0 / scale, 1.0 / scale);
        resample->interpolation = Color::INTERPOLATION_NEAREST;
        resample->sub_task() = sub_task;

        sub_task->target_surface.reset();

        apply(params, resample);
    }
}

void
OptimizerDraftResample::run(const RunParams& params) const
{
    if (TaskSurfaceResample::Handle resample = TaskSurfaceResample::Handle::cast_dynamic(params.ref_task)) {
        if (resample->interpolation != Color::INTERPOLATION_NEAREST
                || approximate_greater_lp(resample->supersample[0], 1.0)
                || approximate_greater_lp(resample->supersample[1], 1.0)) {
            resample = TaskSurfaceResample::Handle::cast_dynamic(resample->clone());
            resample->interpolation = Color::INTERPOLATION_NEAREST;
            resample->supersample[0] = std::min(resample->supersample[0], 1.0);
            resample->supersample[1] = std::min(resample->supersample[1], 1.0);
            apply(params, resample);
        }
    }
}

void
OptimizerDraftContour::run(const RunParams& params) const
{
    if (TaskContour::Handle contour = TaskContour::Handle::cast_dynamic(params.ref_task)) {
        if (approximate_less_lp(contour->detail, 4.0)
                || (contour->contour && contour->contour->antialias && contour->allow_antialias)) {
            contour = TaskContour::Handle::cast_dynamic(contour->clone());
            contour->detail = std::max(4.0, contour->detail);
            contour->allow_antialias = false;
            apply(params, contour);
        }
    }
}

void
OptimizerDraftBlur::run(const RunParams& params) const
{
    if (TaskBlur::Handle blur = TaskBlur::Handle::cast_dynamic(params.ref_task)) {
        if (blur->blur.type != Blur::BOX) {
            blur = TaskBlur::Handle::cast_dynamic(blur->clone());
            blur->blur.type = Blur::BOX;
            apply(params, blur);
        }
    }
}

void
OptimizerDraftLayerRemove::run(const RunParams& params) const
{
    if (TaskLayer::Handle layer = TaskLayer::Handle::cast_dynamic(params.ref_task))
        if (layer->layer && layer->layer->get_name() == layername) {
            apply(params, NULL);
        }
}

void
OptimizerDraftLayerSkip::run(const RunParams& params) const
{
    if (TaskLayer::Handle layer = TaskLayer::Handle::cast_dynamic(params.ref_task))
        if (layer->layer && layer->layer->get_name() == layername) {
            apply(params, layer->sub_task());
        }
}